JP3348313B2 - Tape cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge having a tape loading pocket on the front of a main body case, in which a head cylinder of a tape recorder can be inserted.

[0002]

2. Description of the Related Art In a tape recorder (VTR) such as a video camera, further reduction in size and weight is desired. In that case, the target tape cartridge has a pocket for tape loading on the front surface of the main body case, but the form in which the head cylinder on the tape recorder side is reduced in size and inserted into the inside of the pocket responds to the above demand. Are being considered. The problem is that there is a limit to miniaturization of the head cylinder, and there is a problem in how to make the lid structure around the pocket so that the head cylinder is inserted as deeply as possible so as not to interfere with the pocket of the main body case.

FIGS. 21 and 22 show a conventional tape cartridge of this type, specifically for an 8 mm video. In this case, the front cover 11 that closes the front surface thereof is rotatably supported by the main body case 1, and the back cover 130 is attached to the front cover 11 at the location where the pocket 5 exists. According to this, in the closed state of the lid when not in use, FIG.
As shown in the figure, the front outside of the tape 3 is covered with the front cover 11, the inside of the back of the tape 3 is covered with the back cover 130 at the location of the pocket 5, and the tape 3 is covered with the front cover including the top surface of the pocket 5. 11 and the back cover 130 are wrapped and protected.

The back cover 130 has its upper and lower middle portions rotatably connected to the front cover 11 at two points on the left and right sides via a shaft 131.
The front cover 11 is located between the main body case 1 and the back cover 130.
There is a guide means for opening and moving the back cover 130 to the upper surface side of the pocket 5 with the upward opening rotation. As the guide means, substantially S-shaped guide grooves 133 are provided on the opposing surfaces of the left and right side walls 6, 6 of the pocket 5, and the arm pieces 134 Piece 134
At the tip of 134, slides 135 and 135 are protruded sideways,
The slides 135 are inserted into the guide grooves 133
3 to slide along. According to this,
By the guiding action of the guide grooves 133, 133 and the slides 135, 135, the back cover 130 is opened and moved upward together with the front cover 11 as shown in FIG.

[0005]

However, as is apparent from FIG. 22, when the front cover 11 is opened, the back cover 1 is not used.
30 is in a state where the lower end thereof protrudes forward and long on the upper surface of the pocket 5. That is, the effective opening height H of the pocket 5 is low due to the back cover 130. Therefore, if the head cylinder D is to be inserted deep inside the pocket 5,
The head cylinder D abuts and interferes with the back cover 130, and this has been a bottleneck for downsizing the tape recorder.

Another conventional example is disclosed in Japanese Patent Application Laid-Open No. 61-2105.
In the back cover 130 shown in FIGS. 21 and 22 , the main body 130a and the upper cover 13 are provided.
0b, the front end of the upper lid 130b is rotatably connected to the upper end of the front wall 11a of the front lid 11, and the other parts are substantially the same. The upper lid 130b closes the upper surface of the opening of the hoquette 5 when not in use, and when the front lid 11 is opened upward, it rides on the upper surface of the upper wall of the main body case 1 and retreats rearward. However, even in this case, when the back cover 130 is opened, the main body portion 130a greatly protrudes above the upper surface of the pocket 5, and the effective opening height H of the pocket 5 is still low.

It is an object of the present invention to provide a tape cartridge which allows the head cylinder on the tape recorder side to enter the inside of the pocket of the main body case as deeply as possible, thereby contributing to the reduction in size and weight of the tape recorder side. It is in. Another object of the present invention is to provide a tape cartridge which can achieve the above-mentioned object without taking the depth of the pocket larger than necessary.

[0008]

The tape cartridge according to the present invention has the following requirements in common. (A) Tape outlets 4.4 on the left and right in front of body case 1
Having. (B) At the front of the main body case 1, a tape outlet 4.4
A tape loading pocket 5 having an opening at the upper, lower, and front surfaces is formed between the pockets. (C) A front cover 1 for opening and closing the front of the main body case 1
1 is supported via a shaft 14 so that it can be opened upward. It has an upper lid 12 that opens and closes the upper surface of the pocket 5 with opening and closing of the front lid 11, and the front end of the main face plate 12 a of the upper lid 12 is the front lid 1.
It is pivotally connected to the upper end of one front wall 11a via a pin 20 so as to be freely rotatable. (D) A guide means is provided between the main body case 1 and the upper lid 12 for moving and guiding the upper lid 12 so that the main surface plate 12a of the upper lid 12 is retracted to the rear of the upper surface of the pocket 5 with the upward rotation of the front lid 11. ing.

According to a first aspect of the present invention, in the tape cartridge satisfying the above-mentioned requirements (a) to (d), as shown in FIGS. Arm pieces 22 are vertically provided on the left and right sides of the main face plate 12a, and arc-shaped guide grooves 24 are provided in the left and right side walls 6.6 of the pocket 5 in the front-rear direction. Slider 23.2 at the tip of piece 22
3 is slidably engaged.

Specifically, as shown in FIG. 1, each of the left and right guide grooves 24 connects the pin 2 connecting the front lid 11 and the upper lid 12 to each other.
It is formed in a chevron-shaped arc shape that matches the movement locus of zero. At the front end of the left and right side walls 6, 6 of the pocket 5, tape guides 9, 9 facing the tape outlets 4, 4, respectively, are provided, and outer peripheral surface portions 9b of the left and right tape guides 9, 9 are provided.
9b faces the pocket 5 below the guide grooves 24. For this purpose, as shown in FIGS. 1 and 8, a notch 8.8 is provided at the lower part of the front end of the left and right side walls 6.6 of the pocket 5, and the outer peripheral surface portion 9b of the tape guide 9.9 is provided through the notch 8.8.・ 9b is pocket 5
Face inside. As shown in FIG. 1, the front end of the main face plate 12a of the upper lid 12 is pivotally connected to the front wall 11a of the front lid 11 at a position higher than the shaft 14 and shifted forward.

At the location where the pocket 5 is present, as shown in FIGS. 3 and 8, an eave wall 26 for covering the upper inner surface of the pocket 5 is formed so as to protrude at the front end of the upper wall of the main body case 1. At the left and right ends of the wall 26, escape grooves 26a for receiving the arms 22 on the upper lid 12 side when the upper lid 12 is retracted rearward are formed. A slider 13 for opening and closing the lower surface of the pocket 5 is slidably mounted on the outer lower surface of the main body case 1 as shown in FIGS. As shown in FIGS. 5 and 7, the positioning reference holes 4 are formed on the outer lower surface of the main body case 1 at positions corresponding directly below the left and right tape guides 9.
0 and 40 are provided so that when the slider 13 is opened rearward and moved as shown in FIG. 3C, the positioning reference pins on the tape recorder side can be engaged with the reference holes 40 and 40 from below. It has become.

The front lid 11 covers the front surface of the main body case 1 from left to right, and the left and right side walls 15 of the main body case 1 are extended rearward from the left and right ends of the front wall 11a.
Side walls 11b-1 supported by the shafts 14
1b, the slider 13 comprises a bottom wall 13a and a bottom wall 1a.
Side walls 13b, 13b standing upright from the left and right ends of 3a
And The left and right side walls 13b of the slider 13
As shown in FIGS. 11 and 12, step portions 63 are cut out at the front end side of the front cover 13b, and when the front cover 11 is in the closed posture, the left and right side walls 11b of the front cover 11 are formed.
The lower ends of the front lids 11 are received by the step portions 63, respectively, so that the upward rotation of the front cover 11 is restricted. In this case, when the slider 13 opens backward and moves, the stepped portion 6 is moved.
3, 63 escapes rearward from the lower ends of the left and right side walls 11b, 11b of the front lid 11, and the front lid 11 can freely open upward and rotate.

The main face plate 12a of the upper lid 12 is formed so as to extend leftward and rightward, and the right and left side walls 15 of the main body case 1 are provided at the left and right ends of the main face plate 12a as shown in FIGS.
The right and left side walls 13b, 13b of the slider 13 and the vertical walls 71,7 extend downwardly.
1, engagement protrusions 72, 72 and engagement recesses 73, 73 that engage with each other when the upper lid 12 is closed can be provided. In this case, more specifically, engaging projections 72 are protruded forward from the upper front ends of the left and right side walls 13b of the slider 13, and the vertical wall 7 of the upper lid 12 is formed.
At the rear end of each of the first and second engaging protrusions 72, there are formed groove-like engaging recesses 73, 73 into which the engaging protrusions 72 are fitted from the rear side. In this case, the back cover 12 can be prevented from rattling when not in use.

[0014] The second invention according to claim 12 is as follows.
In the tape cartridge satisfying the requirements (a) to (d), the main surface plate 12a of the upper lid 12 is provided on the upper end of the front wall 11a of the front lid 11, as shown in FIGS. A cover wall 11c that covers the front end from the front side is provided integrally.
The cover wall 11c in this case is for preventing dust from entering the inside from the connection point between the upper end of the front wall 11a and the front end of the main face plate 12a. In this case, the guide means of the upper lid 12 also has arm pieces 22 pending on the left and right sides of the main face plate 12 a of the upper lid 12, and arcuate guide grooves 24, 24 on the left and right side walls 6.6 of the pocket 5. Over,
Slider 2 at the tip of each arm piece 22 in each guide groove 24
3 and 23 can be slidably engaged.

More specifically, the main face plate 12a of the upper lid 12
Is formed in a convex arc shape when viewed from the vertical side as shown in FIG. 16, and the inner surface of the covering wall 11c is
It is assumed that it is formed on a concave curved surface substantially along the front end shape of 2a. In addition, at the upper end of the front wall 11a of the front lid 11, FIG.
As shown in FIG. 20, bosses 82 having pins 20 on the right and left sides of the covering wall 11c are projected rearward, and the pins 20 on the left and right ends are provided at the front end of the main face plate 12a of the upper lid 12. Pin holes 21 to be rotatably fitted
The upper lid 1 is provided at the upper end of the left and right side walls 6, 6 of the pocket 5.
In the closed state of FIG. 2, concave portions 81, 81 for receiving and supporting the bosses 82 from above are provided, and the front lid 11, which is long on the left and right, is supported at two points on the left and right when not in use and receives external force. However, it is possible to easily prevent deformation damage.

Further, a slider 13 for opening and closing the lower surface of the pocket 5 is slidably mounted on the outer lower surface of the main body case 1 so as to be able to slide back and forth, and as shown in FIG.
A concave portion 83 is provided on the inner surface at the lower end between the left and right sides so that the front end of the slider 13 abuts on the concave portion 83. Can be prevented from sneaking around.

[0017]

[0018]

When the tape cartridge is not used, the front wall 11a of the front cover 11 is attached to the front wall 11a of the main body case 1 as shown in FIG. Cover the outside of the front of the tape 3
The upper lid 12 covers the upper surface of the pocket 5, and the slider 13 closes the lower surface of the pocket 5. When the tape cartridge is loaded into the tape recorder, the slider 13 opens rearward and moves, and the front lid 11 opens upward around the shaft 14 and rotates. As the front lid 11 is pivoted upward, the upper lid 12 causes the respective sliders 23 to slide rearward upward along the respective guide grooves 24 as shown in FIG. It moves backward while being moved.

As described above, the upper lid 12 is
By connecting the front end of the pocket a to the upper end of the front wall 11a of the front lid 11, the pocket 5 can be widely opened and moved along the arc-shaped guide groove 24 to the rear of the upper surface of the pocket 5. FIG.
(C), the height H of the pocket opening is larger than before, and the head cylinder D can be inserted deeply into the pocket 5 without interfering with the upper lid 12. The guide grooves 24 are provided on the left and right side walls 6.6 of the pocket 5.
Just over the front and back of this, pocket 5
The upper lid 12 can be sufficiently moved to the rear of the upper surface of the pocket 5 even if the depth dimension of the pocket 5 is the same as the conventional one. Since the outer peripheral surface portion 9b of the tape guide 9 faces the inside of the pocket 5, the tape 3 can be smoothly guided to the head cylinder D inserted into the pocket 5.

[0020]

FIG. 1 to FIG. 8 show a first embodiment of a tape cartridge according to the present invention. The tape cartridge shown is for a video, and as shown in FIGS. 2 and 8, the main body case 1 is formed by butt-connecting upper and lower cases 1a and 1b made of plastic. A pair of reels 2 wound around is provided rotatably.

A tape outlet 4 is provided at the front left and right of the main body case 1.
Having. A tape loading pocket 5 is formed in the center of the front surface of the main body case 1 between the tape outlets 4. The upper and lower surfaces and the front surface of the pocket 5 are open. The left and right side walls 6.6 of the pocket 5 are the upper case 1a.
The pocket 5 and the left and right tape outlets 4 are partitioned by the left and right side walls 6.6. The rear wall 7 of the pocket 5 is
1a and 1b, each of which is made up of wall members integrally erected and joined to each other. The rear wall 7 partitions the pocket 5 from the tape storage space in the main body case 1.

In FIGS. 5 and 8, tape guides 9 integrally provided from the lower case 1b are provided at the front end sides of the left and right side walls 6, 6 of the pocket 5. The tape guide 9 has a semicircular outer peripheral surface portion 9 facing the tape outlet 4 side.
a and a semicircular outer peripheral surface portion 9b facing the pocket 5 side. The outer peripheral surface portion 9b facing the pocket 5 has a cutout in an approximately upper half thereof, and reference numeral 10 denotes the cutout portion. On the other hand, each front end of the left and right side walls 6, 6 of the pocket 5 is also provided with a cutout 8.8 by cutting out a substantially lower half thereof, and the outer peripheral surface portions 9b, 9 are provided.
b is fitted into the cutouts 8, 8 to form an outer peripheral surface 9b.
9b are wrapped around the front end left and right of the pocket 5, respectively.

In FIG. 2, the tape 3 is one reel 2
From the tape outlet 4 in front of it, is introduced into the other tape outlet 4 through the front surface of the pocket 5, and is then wound up on the reel 2 behind it. In order to protect the tape when not in use and to prevent dust, the front surface of the main body case 1 is closed openably and closably by the front cover 11 between the left and right sides, and the pocket 5
Is an upper lid 12 and a lower surface of the pocket 5 is a slider 13.
Respectively, so that they can be opened and closed freely.

2 and 8, the front lid 11 is integrally connected to a front wall 11a that covers the front surface of the main body case 1 including the pocket 5 and the tape outlet 4, and from the left and right ends of the front wall 11a toward the rear of the case. Left and right side walls 11b ・ 1
1b. Shafts 14 are formed on the inner surfaces of the left and right side walls 11b and 11b so as to be opposed to each other in the left and right direction. Shaft holes 16 and 16 are provided in the left and right side walls 15 and 15 of the main body case 1 (upper case 1a side). The shafts 14 are rotatably supported by the shaft holes 16 from the outside. As a result, the entire front lid 11 can be pivoted upward about the shaft 14. When the front cover 11 is opened, the front wall 1
In the closed state of FIG. 1, the front cover 1a is lifted further upward from the upper surface of the pocket 5 and can be pivoted upward.
The distance r between the front wall 11a and the center of the shaft 14 is set to be at least twice as large as the distance h between the upper surface of the pocket 5 and the center of the shaft 14. As shown in FIG. 2, the front lid 11 is always urged to rotate in the closing direction by a torsion coil type spring 17 mounted on one shaft 14.

1 and 8, the upper lid 12 has a flat main plate 12a for closing the upper surface of the opening of the pocket 5.
The front end of the main face plate 12 a is pivotally connected to the upper end of the front wall 11 a of the front lid 11 via a pin 20 so as to be rotatable. That is, in the figure, a central portion at the upper end of the front wall 11a is cut out to form a concave notch 19, and pins 20
20 is protruded. Thus, the recessed portion 1 on the front wall 11a side
9, the front end of the main face plate 12a of the upper lid 12 is fitted, and the pins 20 are fitted into pin holes 21 provided on the left and right of the front end of the main face plate 12a. Main face plate 12a of upper lid 12
, That is, the pin 20 is located at a position higher than the shaft 14 of the front lid 11.

Between the main body case 1 and the upper lid 12, the upper lid 12 is attached to the main face plate 1 with the opening of the front lid 11.
There is provided a guide means for guiding the movement of the pocket 2a so as to retract from the position of closing the upper surface of the opening of the pocket 5 to the rear of the upper surface of the pocket 5. As the guide means, arm pieces 22 are vertically provided on the main face plate 12a of the upper lid 12 on the left and right sides of the front end, respectively, and the sliders 23 are respectively laterally disposed outside the front ends of the arm pieces 22. To protrude. On the other hand, in the left and right side walls 6, 6 of the pocket 5, arc-shaped guide grooves 24, 24, which rise rearward, are provided on the upper end side of the vertical wall surface facing the pocket 5 in the front-rear direction. Thus, the slide 23 is slidably engaged with each guide groove 24. The guide groove 24 is formed as a chevron-shaped arc groove that coincides with the locus of movement of the pin 20 drawn by turning the front cover 11 upward.

In this manner, the upper lid 12 is closed at a position where the main face plate 12a is continuous with the upper rear end of the front lid 11 to close the upper surface of the pocket 5 in conjunction with the opening / closing operation of the front lid 11 (see FIG. )) And the open position (see FIG. 3 (C)) retracting and moving backward from the upper surface of the pocket 5 and parallelly moves in the front-rear direction while always maintaining the horizontal closed posture state. When the upper lid 12 is in the open position shown in FIG.
“a” is located above the upper wall of the main body case 1 and is largely retracted rearward from the upper surface of the pocket 5.

As shown in FIGS. 3 and 8, an eaves wall 26 is formed at the front end of the upper wall of the main body case 1 at the location where the pockets 5 are present. Is blocking the top surface. Relief grooves 26a are provided at the left and right ends of the eave wall 26 so as to prevent the arm pieces 22 from entering the escape grooves 26a and interfering with the eave wall 26 when the upper lid 12 is opened. I have.

5 and 8, the slider 13 has a bottom wall 13a located on the lower surface of the outer side of the main body case 1 and a vertical wall extending upward from the left and right ends of the bottom wall 13a. Left and right side walls 13b, 13b located
The main body case 1 is slidably attached to the main body case 1 so as to be freely slidable back and forth. That is, the slider 13 extends between the front closed position at which the lower surface of the pocket 5 is closed (see FIG. 3A) and the rear open position at which the lower surface of the pocket 5 is opened (see FIG. 3C). 1 is moved in the front-rear direction. In order to move and bias the entire slider 13 to the front closed position, as shown in FIG. Of the bottom wall 13a of the slider 13 is hooked on a spring receiver 25 protruding near the center front end.

The slider 13 must be locked immovably in the closed position. Therefore, FIGS. 4 and 8
As shown in FIG. 3, a lock plate 30 is disposed on the inner bottom surface of each of the left and right tape outlets 4 at a position behind the tape guide 9 so as to be slidable in the left and right directions.
A projection 31 is provided on an upper surface of the lock member 30a so as to be engaged with the tip claw 30a of the lock plate 30. The inner bottom surface of the tape outlet 4 is provided with a recessed recess 32 which crosses obliquely in the left and right direction, and the lock plate 30 is fitted therein.
Is moved and biased so that the tip claw 30a projects outward on one side of the tape outlet 4.

As shown in FIG. 8, the left and right side walls 15 of the main body case 1 facing the respective tape outlets 4 are provided with upper and lower cases 1a.
1b, the upper half portion 15a of the side wall and the lower half portion 1 of the side wall provided respectively.
5b. Of these, a notch 34 is provided in the lower half 15b of the side wall of the lower case 1b corresponding to the location where the tip claw 30a of the lock plate 30 projects. The outside of the notch 34 is closed by a wall piece 35 protruding from the upper half 15a of the side wall of the upper case 1a. The lower end of the wall piece 35 and the lower end of the left and right side walls 6 of the pocket 5
As shown in FIG. 2, the locking of the lock plate 30 from rising out of the recess 32 is restricted.

As shown in FIGS. 4 and 8, each lock plate 30 is integrally provided with a cam piece 36 having an inclined edge 36a from the front end. On the other hand, at the front end of the inner bottom surface of each of the tape outlets 4 and at the lower edge of the front wall 11a of the front cover 11, operation grooves 37 and 38 are provided in a communicating manner to allow the release pin on the tape recorder side to enter. ing. Therefore, when the tape cartridge is loaded into the tape recorder, the release pin P on the tape recorder side enters the operation grooves 37 and 38 from the front thereof as shown in FIG. 4, and comes into contact with the inclined edge 36a of the cam piece 36 to push it. . As a result, the lock plate 30 moves in the direction of the pocket 5 against the spring member 33 as shown by a virtual line in FIG. As a result, the tip claw 30a disengages from the protrusion 31 of the slider 13 and the slider 13
Allowed to move backwards.

As shown in FIG. 7, in order to correctly set the main body case 1 in the holder on the tape recorder side, a positioning reference hole 40 for fitting a reference pin on the recorder side is provided before and after the outer lower surface of the main body case 1. A total of four 41s are provided on the front, rear, left and right. Front reference positioning hole 40
Is provided at a position corresponding directly below the tape guide 9. That is, the lower end of the hollow tape guide 9 is used for the reference hole 40. According to this, since the front and rear sliding area of the slider 13 that opens and closes the lower surface of the pocket 5 is required on the lower surface of the main body case 1, the problem that it is difficult to provide a positioning reference hole in the front can be solved at the same time.

There is a lock mechanism for preventing each reel 2 from rotating when not in use. As shown in FIGS. 6 and 8, a pair of left and right support shafts 43 are provided on the bottom wall of the main body case 1 at a front portion between the reels 2 on the inner bottom surface of the main body case 1, as shown in FIGS. And each shaft 4
The reel lock members 42 are inserted into the reference numerals 3 and 43 so as to be rotatable horizontally. Each reel lock member 42
Is always urged by a spring member 45 in the locking posture direction in which the claw 44 at the tip end comes into contact with and engages with the engaging tooth 2a of the corresponding reel 2.

Further, there is provided a release member 46 for simultaneously releasing the rotation stop state of each reel lock member 42.
The release member 46 is incorporated between the left and right reel lock members 42 on the inner bottom surface of the main body case 1 so as to be movable back and forth. The release member 46 is formed in a strip shape having a long hole 47 in the front-rear direction, and a release projection 48 is integrally provided on the upper surface on the front end side. A long through hole 49 is formed in the bottom wall of the main body case 1 in which the release member 46 is incorporated between the support shafts 43 in the front-rear direction. On the other hand, the slider 13
An operation projection 50 is provided at the left and right central portion near the front end of the upper surface of the upper case, and the operation projection 50 passes through the through hole 49 from the bottom of the main body case 1 and engages with the long hole 47 of the release member 46. I have.

According to this, when the tape cartridge is loaded into the tape recorder, the release claw (not shown) on the tape recorder side is moved through the notch 51 (see FIG. 8) provided on the lower edge of the front cover 11 to move the slider 13. After the slide lock of the slider 13 is released in the manner described above,
The slider 13 is pushed open rearward of the case against the spring member 27. At approximately the middle position of the rearward movement of the slider 13, the operation projection 50 is moved to the rear end 47 of the long hole 47 of the release member 46.
a (see FIG. 3B), and thereafter, the release member 46 is moved rearward as the slider 13 further moves rearward (see FIG. 3C). This release member 46
In the vicinity of the end position of the backward movement, the release projection 48 presses and contacts the projections 42a of the left and right reel lock members 42. By this pressing and contacting action, the two reel lock members 42, 42 rotate around the respective support shafts 43, 43 and the respective pawls 4
4 is separated from the engaging teeth 2a of the reels 2.2, and the reels 2.2 are rotatable (see a two-dot chain line diagram in FIG. 6).

After the slider 13 is opened and moved to unlock the reels 2 as described above, the entire tape cartridge descends in the tape recorder, and is inserted into the front and rear positioning reference holes 40 and 41. Are positioned and mounted. At the same time, the front lid 11 is brought into contact with the lid opening member on the tape recorder side so that the spring 17
Open around the shaft 14 and rotate. When the front lid 11 pivots upward about the axis 14, the upper lid 12 slides rearward along the guide groove 24 with the slider 23 at the tip of the arm 22, whereby the upper lid 12 is lifted from the upper surface of the pocket 5. Open and move backward in parallel while being moved.

In the use state in which the front lid 11 and the upper lid 12 are opened, the height H of the pocket opening can be increased as shown in FIG. 3C, and the head cylinder D is inserted deep into the pocket 5. be able to. Regarding the relative positional relationship between the head cylinder D and the height direction of the tape cartridge, the tape cartridge can be set at a lower position lower than the head cylinder D. This means that the head cylinder D and its peripheral mechanism can be arranged as close as possible to the drive shaft for the reel 2 inside the tape recorder, which contributes to downsizing of the tape recorder. When the head cylinder D goes deep into the pocket 5, the plane area of the mechanism for entering the head cylinder D can be reduced. Further, the tape 3 is wound around the outer peripheral surface portion 9b facing the pocket 5 of the tape guide 9, and can be guided stably to the head cylinder D.

(Second Embodiment) FIGS. 9 to 13 show a second embodiment of the tape cartridge according to the present invention. The front lid 11, the upper lid 12, and the slider 13 are respectively provided in the main body case 1 according to the first embodiment. It is installed with substantially the same specifications. However, in this case, FIG.
As shown in the figure, a front wall 11a of the front lid 11 and a main face plate 12a of the upper lid 12 are rotatably connected to each other by providing a pin hole 21 on the front wall 11a side and a pin 20 on the main face plate 12a side. . As shown in FIGS. 11 and 12, a protrusion 61 is formed on the inner surface of the left and right side walls 13b of the slider 13.
61 projecting inward, and the left and right side walls 15 of the main body case 1.
15 has guide grooves 62 in the front-rear direction between the joint surfaces of the upper and lower cases 1a and 1b, and the protrusions 61 are slidably engaged in the guide grooves 62 in the front-rear direction. Steps 63, 63 are cut out at the front end sides of the left and right side walls 13b, 13b of the slider 13, and when the front cover 11 is in a closed state, the left and right side walls 11b, 11b of the front cover 11, as shown in FIG. The lower end is received by the stepped portions 63 so that the front lid 11 does not inadvertently open and rotate. As described above, when the slider 13 is slid backward, as shown in FIG.
63 escapes from the lower side of the left and right side walls 11b to the rear side, so that the front lid 11 can be opened upward.

(Third Embodiment) FIGS. 14 and 15 show a third embodiment of the present invention in which a change is made around the upper lid 12 in the second embodiment. In this case, the main face plate 12a of the upper lid 12 is formed so as to be elongated in the left-right direction, and the left and right side walls 15.1,
The vertical walls 71, 71 along the outer surface of the fifth member 5 extend downward.
Then, between the left and right side walls 13b, 13b of the slider 13 and the vertical walls 71, 71, the upper cover 1
A means for preventing backlash is provided. Specifically, engaging protrusions 72 are provided at the upper front ends of the left and right side walls 13b of the slider 13 so as to project toward the front of the case, and the engaging protrusions 72 are provided at the rear ends of the vertical walls 71. Engaging concave portions 73 are formed to engage with each other.

According to this, when the tape cartridge is taken out from the tape recorder, after the front lid 11 and the upper lid 12 return to the closed posture, the slider 13 slides to the front closed position. At this time, each engagement protrusion 72
Are fitted into and engaged with the respective engagement recesses 73 from the rear side, thereby preventing the upper cover 12 from rattling in the vertical direction. Therefore, it is possible to prevent a problem that the rear end of the upper lid 12 is lifted by the vibration and cannot be removed from the tape recorder. Keep this state even when not in use. Conversely, when loading the tape cartridge into the tape recorder, the slider 13 slides rearward so that each engagement protrusion 72 is disengaged from each engagement recess 73, and the upper lid 12 can be freely opened. . Reference numeral 75 denotes an escape groove for forming the engaging projection 72. Other configurations are the same as the previous embodiment.

(Fourth Embodiment) FIGS. 16 to 20 show a tape cartridge according to a fourth embodiment of the present invention.
The upper lid 12 and the slider 13 are mounted with substantially the same specifications as those of the first embodiment, and the description is omitted by using the same reference numerals. In the fourth embodiment, first, when the front lid 11 and the upper lid 12 are in the closed state, the connection point between the front end of the main face plate 12a of the upper lid 12 and the upper end of the front wall 11a of the front lid 11 at the location where the pocket 5 exists. The purpose is to prevent a gap into which dust enters. For this purpose, as shown in FIG. 16, the recessed portion 1 in the front wall 11a of the front lid 11 is formed.
At the upper end of 9, a cover wall 11c that covers the front end of the main face plate 12a of the upper lid 12 from the front side is integrally formed so as to project upward and rearward.

The cover wall 11c is
It is desired that the upper edge of the cover wall 11c be as close as possible to the front end of the main face plate 12a without interfering with the surrounding rotation. Therefore, the cross-sectional shape of the front end of the main face plate 12a is formed into a convex arc shape in a longitudinal side view such as a semicircle drawn around the pin 20. Accordingly, the inner surface of the covering wall 11c is formed in a convex arc shape in cross section of the main face plate 12a. It was formed on a concave curved surface that almost conformed to the shape.

Next, even if the front lid 11 is supported by the left and right shafts 14 with respect to the main body case 1, the front wall 11a of the front lid 11
When an external load is applied from above or from the front, the front wall 11a, which is particularly long from side to side, tends to bend and deform, and this deformation creates a gap between the front lid 1 and the main body case 1 or the upper lid 12, and dust enters. It will be easier. In order to prevent such deformation of the front lid 11, as shown in FIGS. 17 and 18, upper and lower recesses are formed in the upper wall of the main body case 1, that is, above the front ends of the left and right side walls 6 and 6 of the pocket 5. 81, 81, and the pins 20 on the front lid 11 side.
So that the left and right bosses 82 enter the recesses 81 from above with the front lid 11 and the upper lid 12 closed, and receive and support each boss 82 on the inner bottom surface 81a of each recess 81. did. In other words, the front lid 11 that is long in the left and right directions is also supported by the front wall 11a at two points on the left and right sides of the recesses 81 on the body case 1 side via the bosses 82 so that the front lid 11a is hardly deformed.

Further, as shown in FIG. 16, a recess 83 is formed in the inner surface of the lower end of the front wall 11a of the front cover 11 so that the slider 13 is in close contact with the front cover 11 when the slider 13 is closed. It is provided between the left and right in the shape. Then, in a state where the front lid 11 is closed and the slider 13 advances forward to close the lower surface of the pocket 5, the front end of the bottom wall 13a of the slider 13 abuts on the concave portion 83,
This also prevents intrusion of dust from the corresponding location, and enhances the dust prevention effect as a whole.

[0046]

[0047]

[0048]

[0049]

According to the present invention, the upper lid 12 is pivotally connected to the upper rear of the front lid 11, and the upper lid 12 is largely retracted rearward from the upper surface of the pocket 5 in conjunction with the opening rotation of the front lid 11. By doing so, the effective opening height H of the pocket 5 can be increased. Therefore, the head cylinder D can be inserted into the pocket 5 as deeply as possible in the tape recorder, which is suitable for reducing the size and weight of the tape recorder.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a main part in a closed state in a first embodiment.

FIG. 2 is an overall internal plan view of the first embodiment.

FIG. 3 is a vertical sectional side view for explaining a pocket opening operation process in the first embodiment.

FIG. 4 is a plan view of a lock mechanism portion of the slider in the first embodiment.

FIG. 5 is a sectional view taken along line AA in FIG.

FIG. 6 is a plan view of a lock mechanism portion of the reel in the first embodiment.

FIG. 7 is an overall bottom view in the first embodiment.

FIG. 8 is an overall exploded perspective view of the first embodiment.

FIG. 9 is a longitudinal sectional side view of a main part in a closed state in the second embodiment.

FIG. 10 is a longitudinal sectional side view of a main part in a cover opened state in the second embodiment.

FIG. 11 is an exploded perspective view of a main part in a second embodiment.

FIG. 12 is a side view in a closed state in the second embodiment.

FIG. 13 is a side view of the second embodiment in an open state.

FIG. 14 is a side view of a main part in a closed state in the third embodiment.

FIG. 15 is a sectional view taken along line BB in FIG. 14;

FIG. 16 is a longitudinal sectional side view of a main part in a closed state in the fourth embodiment.

FIG. 17 is a perspective view of a main part in a fourth embodiment.

FIG. 18 is a sectional view taken along line CC in FIG. 7;

FIG. 19 is an overall exploded perspective view of the fourth embodiment.

FIG. 20 is an exploded perspective view of a main part in a fourth embodiment.

FIG. 21 shows a conventional tape cartridge in a closed state.
It is a longitudinal section side view.

FIG. 22 shows a conventional tape cartridge in an open state.
It is a longitudinal section side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Reel 3 Tape 4 Tape outlet 5 Pocket 6 Left and right side wall of pocket 8 Notch 9 Tape guide 11 Front lid 11a Front wall of front lid 12 Top lid 12a Main face plate of top lid 13 Slider 14 Axis 20 Pin 22 Arm piece 23 Slider 24 Guide groove

──────────────────────────────────────────────────続 き Continued on the front page (31) Priority claim number Japanese Patent Application No. 4-345346 (32) Priority date November 30, 1992 (1992.11.130) (33) Priority claim country Japan (JP) (72) Inventor Tatsumi Nishijima 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref.Hitachi, Ltd.Video Media Research Laboratories, Ltd. Office (72) Inventor Kenji Ogiji 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi, Ltd. (56) References JP-A-4-219683 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/087

Claims (17)

(57) [Claims] 1. A tape loading pocket having tape outlets at the front left and right sides of a main body case, and a tape opening on the front surface of the main body case between the tape outlets. The front cover 11 for opening and closing the front surface of the body case 1 has a shaft 1
4, and has an upper lid 12 that opens and closes the upper surface of the pocket 5 as the front lid 11 opens and closes. The front end of the main face plate 12 a of the upper lid 12 is
1 is pivotally connected to the upper end of the front wall 11a via a pin 20 so as to be rotatable. The upper lid 12 is moved between the main body case 1 and the upper lid 12 in accordance with the upward opening rotation of the front lid 11. Main surface plate 12a is pocket 5
The arm means 22 is provided on the left and right sides of the main face plate 12a of the upper lid 12, and the left and right side walls 6 of the pocket 5 are provided as guide means.
6 is provided with arc-shaped guide grooves 24, 24 extending in the front-rear direction, and the sliding members 23, 23 at the tips of the arm pieces 22, 22 are slidably engaged with the guide grooves 24, 24. Characterized tape cartridge. 2. The tape cartridge according to claim 1, wherein each of the left and right guide grooves is formed in a chevron-shaped arc shape corresponding to the movement locus of the pin connecting the front cover and the upper cover. 3. At the front end of the left and right side walls 6, 6 of the pocket 5,
Tape guides 9.9 facing the tape outlets 4, 4 are provided respectively, and outer peripheral surface portions 9b, 9b of the left and right tape guides 9.9, respectively.
2. The tape cartridge according to claim 1, wherein the tape cartridges respectively face the pockets 5 below the guide grooves 24. 4. A notch 8.8 is provided at a lower portion of the front end of the left and right side walls 6.6 of the pocket 5, and the outer peripheral surface portions 9b of the tape guide 9.9 are formed through the notch 8.8. 4. The tape cartridge according to claim 3, wherein the tape cartridge faces the inside of the tape cartridge. 5. The tape cartridge according to claim 1, wherein the front end of the main face plate 12a of the upper lid 12 is pivotally connected to the front wall 11a of the front lid 11 at a position deviated to the front higher than the shaft 14. 6. An eaves wall 26 is formed at the front end of the upper wall of the main body case 1 at the location of the pocket 5 so as to protrude from the upper end of the inner wall of the pocket 5 so as to protrude. The tape cartridge according to claim 1, wherein escape grooves (26a) for receiving said arm pieces (22) on said upper lid (12) when said upper lid (12) is retracted rearward are formed. 7. A pocket 5 is provided on an outer lower surface of the main body case 1.
2. The tape cartridge according to claim 1, wherein a slider for opening and closing the lower surface of the tape cartridge is slidably mounted in the front and rear direction. 8. At the front ends of the left and right side walls 6, 6 of the pocket 5,
Tape guides 9.9 facing the tape outlets 4 are provided respectively.
· Positioning reference holes 40 · 4 at locations corresponding directly below 9
8. The tape cartridge according to claim 7, wherein 0 is provided. 9. A front wall 11a in which the front lid 11 covers the front surface of the main body case 1 from side to side, and left and right side walls 15.1 of the main body case 1 extended rearward from left and right ends of the front wall 11a.
Left and right side walls 11 supported by the shafts 14 via the shafts 14
The slider 13 has a bottom wall 13a, and side walls 13b, 13b standing upright from the left and right ends of the bottom wall 13a. A stepped portion is provided on the front end side of the left and right side walls 13b, 13b of the slider 13. When the front cover 11 is in the closed position, the left and right side walls 1 of the front cover 11 are formed.
8. The tape cartridge according to claim 7, wherein the lower ends of the first and second ribs are received by the stepped portions, respectively, so that the upward rotation of the front lid is restricted. 10. At the left and right ends of the main face plate 12a of the upper lid 12,
Vertical walls 71, 71 extending along the outer surfaces of the left and right side walls 15, 15 of the main body case 1 extend downward.
8. The tape cartridge according to claim 7, further comprising engaging projections 72, 72 and engaging recesses 73, 73 which engage with each other when the upper lid 12 is closed. 11. Left and right side walls 13b of the slider 13.
At the upper front end of the upper lid 12, engagement projections 72, 72 project forward, and at the rear ends of the vertical walls 71, 71 of the upper lid 12, engagement projections 72, 7.
2 are groove-shaped engaging recesses 73 each fitted from the rear side.
The tape cartridge according to claim 10, wherein 73 is formed. 12. A tape loading pocket having tape outlets 4.4 on the front left and right sides of the main body case 1 and a front and rear surface and a front opening between the tape outlets 4 on the front surface of the main body case 1. The front cover 11 for opening and closing the front surface of the body case 1 has a shaft 1
4, and has an upper lid 12 that opens and closes the upper surface of the pocket 5 as the front lid 11 opens and closes. The front end of the main face plate 12 a of the upper lid 12 is
1 is pivotally connected to the upper end of the front wall 11a via a pin 20 so as to be rotatable. The upper lid 12 is moved between the main body case 1 and the upper lid 12 in accordance with the upward opening rotation of the front lid 11. Main surface plate 12a is pocket 5
A guide means for moving and moving to the rear of the upper surface of the front cover 11 at the location where the pocket 5 exists.
A tape cartridge, wherein a cover wall 11c for covering the front end of the main face plate 12a of the upper lid 12 from the front side is integrally provided at the upper end of the upper lid a. 13. As the guide means, arm pieces 22 are vertically provided on the left and right sides of the main face plate 12a of the upper lid 12, and arc-shaped guide grooves 24 are formed in left and right side walls 6.6 of the pocket 5.
24 are provided in the front-rear direction, and each guide groove 24
13. The tape cartridge according to claim 12, wherein 3 and 23 are slidably engaged. 14. A front end of the main face plate 12a of the upper lid 12 is formed in a convex arc shape when viewed in a longitudinal side view, and an inner surface of the cover wall 11c is formed as a concave curved surface substantially conforming to a front end shape of the main face plate 12a. 14. The tape cartridge according to claim 13, wherein: 15. At the upper end of the front wall 11a of the front lid 11,
Bosses 82 having pins 20 are protruded rearward on both left and right sides of the cover wall 11c, and the pins 20 are rotatably provided at the left and right ends at the front end of the main face plate 12a of the upper lid 12. A recessed hole 81 is provided at the upper end of the left and right side walls 6.6 of the pocket 5 for receiving and supporting the bosses 82 from above with the upper lid 12 closed. 14. The tape cartridge according to claim 13, wherein: 16. The tape cartridge according to claim 12, wherein a slider for opening and closing the lower surface of the pocket is slidably mounted on the outer lower surface of the main body case. 17. The tape cartridge according to claim 16, wherein a concave portion is provided on the inner surface of the lower end of the front wall of the front cover, and the front end of the slider abuts the concave portion .